Pivot fan



FIG. 1 is a front perspective view of a pivot fan showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is an enlarged top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof;

FIG. 6 is an enlarged bottom view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof. 

The ornamental design for a pivot fan, as shown and described. 